What if you eliminated the anonymity of caller to receiver, and only tried to achieve traffic analysis resistance. That is, a receiver can find out who is calling him, but if the caller and receiver are honest and desire privacy, a third party cannot find out they are communicating. Does this allow for a more efficient design? Can the intermediate switch nodes now handle delays by inserting dummy traffic, which can only be recognized as such by the other end (caller or receiver)? Ob